Transportable Pressure Equipment

The Directive covers the placing on the market of transportable pressure vessels and any valves and accessories attached to them.

It applies to the design, manufacture, conformity assessment and periodic reassessment of transportable cylinders, tubes, cryogenic vessels and tanks for transporting gases as well as hydrogen cyanide, hydrogen fluoride and hydrofluoric acid.

It also covers associated valves and includes both refillable and non-refillable cylinders, applying to both existing and new equipment introduced since 1st July 2001. Existing equipment is checked for compliance during periodic assessments. A specific list of exclusions from this directive exists.

What products do we test?

Typical examples of pressure equipment covered include:

  • Fuel gas cylinders
  • Welding gas cylinders
  • Road tankers for transport of compressed gases
  • Battery vehicles containing bundles of cylinders joined by a manifold
  • Containerized vessels for compressed gases
  • Cylinders incorporated in life rafts and lifejackets
  • Vessels for cryogenically cooled gases

Pressure vessels and apparatus used for non-transport related applications will usually be within the scope of the Pressure Equipment Directive 97/23/EC instead.

Equipment placed on the market before 1st July 2001 does not require initial conformity assessment but must be reassessed at the time of its periodic inspection under the ADR regulations as defined in the ADR packing instruction P200 and dependent on the gas carried.

Other specific exclusions are:

  • Vessels for non-hazardous gases under 2 bar
  • Vessels incorporated into vehicles for their operation
  • Vessels for pressurized foodstuffs or fizzy drinks
  • Vessels not being used for work
  • Aerosol dispensers covered by 75/324/EC
  • Gas cartridges
  • Lighters and refills
  • Refrigerators with less than 12kg of refrigerant
  • Shock absorbers and gas springs with a volume less then 1.6 litres and a P.V not exceeding 80 bar.litres subject to certain provisions
  • CO2 sparklets of limited pressure and size (derogation 584)
  • Unpressurised flasks of certain cryogenic inert gases for cooling of medical and biological specimens
  • Fire extinguishers (which are covered by the PED)
  • Equipment designed principally to withstand forces due to other functions than the containment of pressure
  • Gas cylinders for breathing apparatus (which are covered by the PED) 

Benefits of meeting the Directive

Directive 1999/36/EC, the Transportable Pressure Equipment Directive, also known as the TPED is one of a series of measures implementing ADR - the European agreement on the International Carriage of Dangerous Goods.

It is implemented in the UK along with ADR by The Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2004

The purpose of the TPED is to provide for a legal structure whereby pressure equipment to be transported under pressure can be manufactured and sold and used throughout the European community without having to go through a local approval regime in every member state and can be transported between EU member states and beyond.